On Fri, 11 May 2007, James Green wrote: > Hi, > > We have a bunch of servers to which we recently attached a set of > external USB drives. The drives and enclosures are all identical as are > the Intel chipsets, OS and Kernel builds. > > Two of these servers are from separate manufacturers and error when you > try to mount the drives. For one of these boxes I've switched on full > USB debugging and post dmesg below. The rest of the servers can use > the drives fine. > > Can you suggest anything to debug / fix?
... > hub 1-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x101 > usb 1-2: new full speed USB device using uhci_hcd and address 2 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: device descriptor read/64, error -71 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: device descriptor read/64, error -71 > usb 1-2: new full speed USB device using uhci_hcd and address 3 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: device descriptor read/64, error -71 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: uhci_result_common: failed with status 440000 > usb 1-2: uhci_result_common: failed with status 440000 These sorts of errors usually indicate low-level hardware problems, such as bad USB cables or faulty terminations. You should start by checking the cables (and don't forget any cables inside the computer case, connecting the USB ports to the motherboard). Also check to see if the devices themselves are broken, by trying to connect them to a different computer. And make sure the computer's USB controller is okay by finding another device which can work with it. Alan Stern ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
